chore: release v4.6.1

[joepegler]

PR-Codex overview

This PR removes the DAN session functionality temporarily, updates the package version to 4.6.2, and adds a new test-playground workflow.

Detailed summary

• Removed DAN session functionality temporarily
• Updated package version to 4.6.2
• Added a new test-playground workflow

The following files were skipped due to too many changes: tests/playground/write.test.ts, tests/modules/write.test.ts, src/account/BiconomySmartAccountV2.ts

✨ Ask PR-Codex anything about this PR by commenting with /codex {your question}

[github-actions]

size-limit report 📦

Path	Size
core (esm)	55.78 KB (-22.9% 🔽)
core (cjs)	61.02 KB (-22.07% 🔽)
account (tree-shaking)	53.5 KB (-23.29% 🔽)
bundler (tree-shaking)	2.54 KB (0%)
paymaster (tree-shaking)	2.23 KB (0%)
modules (tree-shaking)	40.95 KB (-29.25% 🔽)